O'Reilly logo

Network Security Principles and Practices by Saadat Malik

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Switch Security

For the purpose of our discussion here, I will concentrate on the Catalyst 5500 switches. Similar mechanisms can be used to set up security on other types of switches. Switches perform most of their functions at Layer 2 of the OSI model. They often do not participate in Layer 3 and above operations actively. Consequently, access to switches through various Layer 3 and above functions such as Telnet and rsh is very limited. This provides for switch security as well. This section looks at some of the mechanisms you can put into place to further strengthen switch security.

Configuration Management

It is important in switches, as in any other network device, to back up and save the configurations periodically and/or after you make ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required